Nostalrius Begins - Quality wow vanilla realm (1.12)

Not sure if this is a bug, wondering if anyone knows, but it sounds wrong to me.

Upon hitting level 11 on my orc warrior, I gained a bunch of stats, one of them being a stamina increase of 2, and another being "you have gained -1 hitpoints". I'm not sure if the minus is a typo, or if a health point was actually subtracted, but does anyone know if this actually happens? I don't ever recall getting negative "gains" on level ups, but I suppose I could be wrong, or maybe the server shows the difference this way to say I was to gain [(stam x hp scaling for stam) - 1 hitpoint] in health?

That indeed sounds odd!
You should always gain points when levelling - never lose points.

Anyone else experience this?

That just happened to me on my troll warrior. When I hit level 11 it said 'You have gained -1 hitpoints.'
And I did in fact lose one hit point.

Peculiar. No one else seems to have encountered this when I've asked in the General channel.